<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>localStorage</title>
</head>
    <body>
        <h2>localStorage</h2>
        <button onclick="saveData()">点我保存一个数据</button>
        <button onclick="readData()">点我读取一个数据</button>
        <button onclick="removeData()">点我删除一个数据</button>
        <button onclick="removeAllData()">点我清空localStorage</button>
        

        <script>

            let p = {name:'张三',age:18}

            function saveData(){
                // window.localStorage.setItem('msg','Hello')
                localStorage.setItem('msg','Hello')
                localStorage.setItem('msg2',666)
                localStorage.setItem('person',JSON.stringify(p))
            }

            function readData(){
                // window.localStorage.setItem('msg','Hello')
                console.log(localStorage.getItem('msg'))
                console.log(localStorage.getItem('msg2'))
                let result = localStorage.getItem('person')
                console.log(JSON.parse(result))
            }

            function removeData(){
                // window.localStorage.setItem('msg','Hello')
                localStorage.removeItem('msg2')
            }

            function removeAllData(){
                // window.localStorage.setItem('msg','Hello')
                localStorage.clear()
            }
        </script>

    </body>
</html>